Calculates eigenvalues and eigenvectors of a symmetric matrix.
- src_in – Input matrix that must have CV_32FC1 or CV_64FC1 type, square size and be symmetrical.
- eigenvalues_out – Output vector of eigenvalues of the same type as src; the eigenvalues are stored in the descending order.
- eigenvectors_out – Output matrix of eigenvectors; it has the same size and type as src.
- retval_out – Return value.